IE811800L - Automatic speed control system - Google Patents

Automatic speed control system

Info

Publication number
IE811800L
IE811800L IE811800A IE180081A IE811800L IE 811800 L IE811800 L IE 811800L IE 811800 A IE811800 A IE 811800A IE 180081 A IE180081 A IE 180081A IE 811800 L IE811800 L IE 811800L
Authority
IE
Ireland
Prior art keywords
error
speed
vehicle
control system
produce
Prior art date
Application number
IE811800A
Other versions
IE51725B1 (en
Original Assignee
Ae Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ae Plc filed Critical Ae Plc
Publication of IE811800L publication Critical patent/IE811800L/en
Publication of IE51725B1 publication Critical patent/IE51725B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
    • B60K31/02—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism
    • B60K31/04—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
    • B60K31/042—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0001—Details of the control system
    • B60W2050/0002—Automatic control, details of type of controller or control system architecture
    • B60W2050/0008—Feedback, closed loop systems or details of feedback error signal
    • B60W2050/0009—Proportional differential [PD] controller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/10—Longitudinal speed
    • B60W2720/106—Longitudinal acceleration

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Controls For Constant Speed Travelling (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

An automatic speed control system is disclosed in which an error signal Ve, representing the speed error of the vehicle, is added to a ramp voltage, ramping between fixed values, to produce a control signal Vc. Two comparators compare Vc with upper and lower limits, respectively, so as to produce a pulse train on one of two lines depending on the sign of the error and having a mark-space ratio depending on the magnitude of the error. A circuit responds to the first pulse to occur in the pulse train from one of the two comparators when the vehicle is accelerating towards and overshooting a new desired speed and, via a switching circuit, lowers the upper limit applied to that comparator so as to lengthen the first pulses and help to reduce overshoot of the desired speed. When the vehicle ceases accelerating, the upper limit is switched back to the desired value, and is also switched back to its original setting when the speed falls by a preset amount. [US4400757A]
IE1800/81A 1980-08-08 1981-08-07 Automatic speed control systems IE51725B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8025883A GB2081934B (en) 1980-08-08 1980-08-08 Automatic speed control systems

Publications (2)

Publication Number Publication Date
IE811800L true IE811800L (en) 1982-02-08
IE51725B1 IE51725B1 (en) 1987-03-04

Family

ID=10515323

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1800/81A IE51725B1 (en) 1980-08-08 1981-08-07 Automatic speed control systems

Country Status (10)

Country Link
US (1) US4400757A (en)
EP (1) EP0045846B1 (en)
JP (1) JPS5756641A (en)
AU (1) AU547531B2 (en)
DE (1) DE3172817D1 (en)
DK (1) DK148558C (en)
ES (1) ES504622A0 (en)
GB (1) GB2081934B (en)
IE (1) IE51725B1 (en)
ZA (1) ZA815472B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152166A (en) * 1983-12-06 1985-07-31 Ae Plc Automatic vehicle speed control
DE3539556A1 (en) * 1985-11-07 1987-05-14 Papst Motoren Gmbh & Co Kg CIRCUIT ARRANGEMENT FOR GENERATING A DC CURRENT SIGNAL SIGNAL ASSIGNED TO THE FREQUENCY OF AN AC SIGNAL SIGNAL, IN PARTICULAR FOR THE DC CONTROL OF AN ELECTRIC MOTOR
GB9005081D0 (en) * 1990-03-07 1990-05-02 Lucas Ind Plc Method of and apparatus for controlling wheel spin
JP3745889B2 (en) * 1997-10-08 2006-02-15 株式会社 神崎高級工機製作所 Work equipment mounting device
FR2813443B1 (en) * 2000-08-30 2003-01-03 Centre Nat Rech Scient HALL EFFECT SENSOR
EP1703500A1 (en) * 2005-03-14 2006-09-20 Deutsche Thomson-Brandt Gmbh Data page pixel shaping for holographic recording

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295316A (en) * 1964-06-10 1967-01-03 United Aircraft Corp Speed overshoot limiter for fuel controls
US3575256A (en) * 1969-02-12 1971-04-20 Ford Motor Co Speed control system for an automtoive vehicle
JPS5032390B1 (en) * 1970-07-08 1975-10-20
GB1386961A (en) 1971-02-01 1975-03-12 Ass Eng Ltd Speed-responsive systems
US3790855A (en) * 1972-12-04 1974-02-05 Gte Laboratories Inc Electronic control module for anti-skid braking systems
GB1470757A (en) * 1973-04-27 1977-04-21 Lucas Industries Ltd Fuel control systems for gas turbine engines
GB1493623A (en) 1974-03-05 1977-11-30 Ass Eng Ltd Speed control systems
GB1570887A (en) * 1976-03-13 1980-07-09 Ass Eng Ltd Speed responsive systems
US4188781A (en) * 1978-04-25 1980-02-19 General Electric Company Non-linear dual mode regulator circuit
US4352403A (en) * 1979-03-22 1982-10-05 Travel Accessories Manufacturing Co., Inc. Vehicle speed control system
US4336566A (en) * 1979-08-03 1982-06-22 Associated Engineering Limited Vehicle speed control systems

Also Published As

Publication number Publication date
EP0045846B1 (en) 1985-11-06
ES8204672A1 (en) 1982-05-01
GB2081934A (en) 1982-02-24
AU7281581A (en) 1982-02-11
DK353681A (en) 1982-02-09
US4400757A (en) 1983-08-23
EP0045846A1 (en) 1982-02-17
DK148558B (en) 1985-08-05
ES504622A0 (en) 1982-05-01
JPS5756641A (en) 1982-04-05
AU547531B2 (en) 1985-10-24
DK148558C (en) 1985-12-30
ZA815472B (en) 1983-03-30
GB2081934B (en) 1984-03-07
IE51725B1 (en) 1987-03-04
DE3172817D1 (en) 1985-12-12

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